WO2010007096A3 - System for electrical capacitance tomography - Google Patents

System for electrical capacitance tomography Download PDF

Info

Publication number
WO2010007096A3
WO2010007096A3 PCT/EP2009/059070 EP2009059070W WO2010007096A3 WO 2010007096 A3 WO2010007096 A3 WO 2010007096A3 EP 2009059070 W EP2009059070 W EP 2009059070W WO 2010007096 A3 WO2010007096 A3 WO 2010007096A3
Authority
WO
WIPO (PCT)
Prior art keywords
electrodes
charge
measuring circuit
electrode
discharge measuring
Prior art date
Application number
PCT/EP2009/059070
Other languages
French (fr)
Other versions
WO2010007096A2 (en
Inventor
Thomas Scheiwiller
Dario Pierri
Daniel Erhardt
Original Assignee
Bühler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bühler AG filed Critical Bühler AG
Publication of WO2010007096A2 publication Critical patent/WO2010007096A2/en
Publication of WO2010007096A3 publication Critical patent/WO2010007096A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
    • H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
    • H05K1/0219—Printed shielding conductors for shielding around or between signal conductors, e.g. coplanar or coaxial printed shielding conductors

Abstract

The present invention provides an improved system for electrical capacitance tomography imaging of material located within a space delimited by walls. The system comprises multiple electrodes arranged on said walls and defining a capacitance between each pair of electrodes within said multiple electrodes; and a charge/discharge measuring circuit connected or connectable to each of said pairs of electrodes. The charge/discharge measuring circuit comprises switching means for alternately connecting an electrode as an excitation electrode and a measurement electrode. Signal lines connecting electrode surfaces of said electrodes to said charge/discharge measuring circuit are provided with shield lines and/or shield layers.
PCT/EP2009/059070 2008-07-16 2009-07-15 System for electrical capacitance tomography WO2010007096A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08104760.7 2008-07-16
EP08104760 2008-07-16

Publications (2)

Publication Number Publication Date
WO2010007096A2 WO2010007096A2 (en) 2010-01-21
WO2010007096A3 true WO2010007096A3 (en) 2010-03-11

Family

ID=40158447

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/059070 WO2010007096A2 (en) 2008-07-16 2009-07-15 System for electrical capacitance tomography

Country Status (1)

Country Link
WO (1) WO2010007096A2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9259168B2 (en) 2011-10-04 2016-02-16 The Ohio State University Adaptive electrical capacitance volume tomography
US20140361793A1 (en) * 2013-05-30 2014-12-11 Tech4Imaging Llc Interactive and Adaptive Data Acquisition System for Use with Electrical Capacitance Volume Tomography
US9110115B2 (en) 2013-08-13 2015-08-18 Tech4Imaging Llc Modular stretchable and flexible capacitance sensors for use with electrical capacitance volume tomography and capacitance sensing applications
CN104655692B (en) * 2013-11-19 2017-03-01 中国科学院工程热物理研究所 Capacitance tomography sensor
CN104458834B (en) * 2014-12-05 2017-05-03 燕山大学 Material defect detector and material defect detection method
US9901282B2 (en) 2015-04-27 2018-02-27 Tech4Imaging Llc Multi-phase flow decomposition using electrical capacitance volume tomography sensors
US10488236B2 (en) 2016-02-23 2019-11-26 Tech4Imaging Llc Velocity vector field mapping using electrical capacitance sensors
US9958408B2 (en) 2016-05-11 2018-05-01 Tech4Imaging Llc Smart capacitance sensors for use with electrical capacitance volume tomography and capacitance sensing applications
US10281422B2 (en) 2016-09-12 2019-05-07 Tech4Imaging Llc Displacement current phase tomography for imaging of lossy medium
US10502655B2 (en) 2017-03-07 2019-12-10 Tech4Imaging Llc Magnetic pressure sensors system for measurement and imaging of steel mass
US10705043B2 (en) 2017-05-31 2020-07-07 Tech4Imaging Llc Multi-dimensional approach to imaging, monitoring, or measuring systems and processes utilizing capacitance sensors
GB2568292B (en) 2017-11-11 2020-01-22 Zedsen Ltd Examining electrical properties of objects
CN110672678A (en) * 2019-10-30 2020-01-10 中国电子科技集团公司第四十八研究所 Capacitance tomography system for in-situ measurement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5003273A (en) * 1989-12-04 1991-03-26 Itt Corporation Multilayer printed circuit board with pseudo-coaxial transmission lines
US6000120A (en) * 1998-04-16 1999-12-14 Motorola, Inc. Method of making coaxial transmission lines on a printed circuit board
WO2009027782A1 (en) * 2007-08-31 2009-03-05 Bühler AG Method for monitoring a material flowing trough a duct
WO2009027795A1 (en) * 2007-08-31 2009-03-05 Tomoflow Ltd. Method and apparatus for determining moisture or density of a material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5003273A (en) * 1989-12-04 1991-03-26 Itt Corporation Multilayer printed circuit board with pseudo-coaxial transmission lines
US6000120A (en) * 1998-04-16 1999-12-14 Motorola, Inc. Method of making coaxial transmission lines on a printed circuit board
WO2009027782A1 (en) * 2007-08-31 2009-03-05 Bühler AG Method for monitoring a material flowing trough a duct
WO2009027795A1 (en) * 2007-08-31 2009-03-05 Tomoflow Ltd. Method and apparatus for determining moisture or density of a material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
YANG W Q ET AL: "Hardware design of electrical capacitance tomography systems", MEASUREMENT SCIENCE AND TECHNOLOGY, IOP, BRISTOL, GB, vol. 7, no. 3, 1 March 1996 (1996-03-01), pages 225 - 232, XP020063974, ISSN: 0957-0233 *

Also Published As

Publication number Publication date
WO2010007096A2 (en) 2010-01-21

Similar Documents

Publication Publication Date Title
WO2010007096A3 (en) System for electrical capacitance tomography
WO2011084940A3 (en) Fuel system electro-static potential differential level sensor element and hardware/software configuration
EP2362211A3 (en) Apparatus with abnormality determination function and method for determining abnormality
RU2016134240A (en) Electrode Testing Device
WO2012175580A3 (en) Printed circuit board comprising an electrode configuration of an capacitive sensor
WO2006089246A3 (en) Impedance based sensor for monitoring leakage in aaa stent graft
WO2014072123A3 (en) Temperature probe and method for producing a temperature probe
WO2010117946A3 (en) Input device with deflectable electrode
MX354804B (en) Density and viscosity sensor and measuring method.
WO2011015795A3 (en) Capacitive detection device having function integration
EP3970610A3 (en) Analyte sensors and methods of manufacturing same
WO2013137999A3 (en) Method and system for determining body impedance
WO2010110589A3 (en) Insulation resistance measuring circuit free from influence of battery voltage
WO2008113644A3 (en) Sensor element of a gas sensor
WO2008144233A8 (en) Dual standoff resistivity imaging instrument, methods and computer program products
WO2013001098A3 (en) Active shield for capacitive measurement system
EP2603977B8 (en) Capacitance measurement circuit, sensor system and method for measuring a capacitance using a sinusoidal voltage signal
EP2823896A3 (en) Electrostatic capacitance transducer, probe, and subject information acquiring device
US20170331165A1 (en) Battery system
WO2010001089A8 (en) Structural determination apparatus and method
WO2012031963A3 (en) Resistance component and method for producing a resistance component
GB2556468A (en) Monitoring substances in a well annulus
EP3816618A4 (en) Built-in electrode electrical capacitance tomography sensor
WO2008003365A3 (en) Capacitive measuring device for detecting foreign substances in a liquid
WO2014073969A3 (en) Field measurement of corrosion and erosion

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09780639

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09780639

Country of ref document: EP

Kind code of ref document: A2